Abstract
A system of solvents has been selected for the successive extraction of pine needles (benzene, isopropanol, and isopropanol + chloroform). Extraction was carried out by the steeping method at room temperature, and the yield of resinous substances was 19.4%. The extractive substances isolated consisted of neutral compounds, glycolipids, and phospholipids. The group compositions of the neutral substances have been determined by column chromatography. The predominating components in them are hydrocarbons (15.9%), diglycerides (10.7%), and waxy substances (27.6%).
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